Likto scuba



L. SCUSA.

GAGE.

APPLICATION FILED FEB. 11. 1919.

Patented July 15, 1919.

INVEN TOR.

ATTORNEY.

LIBIO SCUBA, 0F PHOENIX, NEW YORK.

GAGE.

1 ,3, too.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed February 11, 1919. Serial No. 276,418.

. ention relates particularly to snap or limit gages employed for gaging manufactured or stockarticles, wherein the gages are adjuste and set and used for turning out a number of similar parts.

7 The object of the invention is to provide more positive, precise and quick-acting looking means for holding the gage-members in the various adjusted positions. A further object is to provide novel and simple means for insulating certain parts of the gage against the heat of the operators hands.

A particular object is to improve the devices shown and described in my United States Patent No. 1,279,919, dated September 24, 1918. i

The various features and parts of the invention will be understood from the detailed description which follows, and by reference to the accompanying drawing, in which Figure 1. is 'a side elevation of the complete device, a portion of one of'the arms being cut away to show the construction, arrangement and operation of one of the gage members. I

Fig. 2 is an end elevation of the same.

Fig. 3 is an enlarged broken section, taken on line 3-3 of Fig. 1; showing one of the gage members locked in the operation position.

Fig. 4 is an enlarged detail View of the gage member and the locking element.

Fig. 5 is a similar view; showing the eccentric locking part released and ready to be operated.

Figs. 6, 7 and 8 are respectively a bottom face view, a central vertical section, and an edge view of one of the insulating members.

In the drawing, 2 represents the body of the gage, which is preferably made of steel or iron, in the form of a horseshoe, and comprises a thin fiat web 3, which is reinforced at its inner edge by a semi-circular flange 4. Beyond the ends of the flange 4, the arms of the body are provided'with corresponding cylindrical enlargements 5-5, and which are bored out, at 6, to receive similar reciprocable cylindrical gage members, 77 and 8-8,

whose square-cut inner ends comprise the gage-points, which project into the bight of the body 2. The outer .ends of said gage members are rounded, so as to reduce the frictional engagement of a series of adjusting screws 10, which are threaded into the outer ends of the holes 6. The screws 10 are employed for adjustably holding the corresponding gage members the required distance apart.

Each of the gage members is provided with oppositely facing plane bevel portions 1'111' extending longitudinally, for providing a portion ii-shaped in cross section, as 11 (see Figs. 3, 4; and 5), adapted to be engaged by a rotary locking part 12, the latter being journaled in a socket or hole 12, in the arm of the body 2, the said socket being disposedlaterally and at right angles to the hole 6. The ends 12 of the locker 12 are cylindrical and coaxial, and intermediate these ends is an annular groove formed by two oppositely facing conical portions 12*, which are joined together by a narrow; neck 12. The conical portions 12 have substantially the same angle and fairly engage the plane faces 11--11 of the gage members when the locker is moved into the locking position. In order to accomplish the positive locking of the gage members, in a novel and simple manner, the axis of each pair of cones 12 is arrangedeccentric to the axis of the ends 12, as shownv in Figs. 3 and 5. One end of each locker 12 has a screwdriver slot 12. Owing to the eccentricity of the cones 12 only a slight rotary movement, clock-wise, of the lockers is required to bring the cones into tight frictional engagement with the planes 1'1-11', for locking the gage members against longitudinal movement.

Fig. 3 shows the parts in the fully locked .gage members as fixed by the screws 10. By

providing the similar oppositely facing cones 12", which straddle the V-shaped portion 11, the gage members are held from rotation, and atthe. same time the pressure exerted by the lockers is always at right angles to the axis of the lockers. Hence, if there is any looseness of the age members in the holes 6, the correspon ing members are forced and rigidly held against the corresponding sides of the holes 6 thereby maintaining the axial alinement of the member.

Where the gages are in constant use, the heat from the operators hands frequently tends to expand themetal comprising the web 3 suficiently to distort or render the gage inaccurate, to the extent, at least, of fractional thpusandths of an inch. lin some cases, where fine and exact gaging is required, this distortion of the arms of the gage is enough to cause the rejection of the work. To overcome this heating and dis tortion of the gages, I provide novel, simple and. efiective means for insulating the body 2, which consists of similar relatively thin sheet metal rosettes 15 and 15', which are preferably mounted on the opposite sides of the web 3, near its rounded end, and which are secured in place by screws 16, as shown in Figs. 1 and 2. The rosettes l5-15' are slightly cupped at their inner faces, and each is provided with three or more short feet 17, which alone engage the surfaces of the web 3, thereby providing several narrow openings 17', for the circulation of the air and the consequent cooling of the parts.

To set my improved gage, the operator first releases the lockers 12 by turning them to the left, for releasing the conical cams 12 12. He then rotates the adjusting screws '10 in the proper direction for permitting the corresponding gage members to i be moved toward or away from each other.

The gage members 7-7- are generally set for aging the initial or rough cutting of the wor r, while the gage members 88 are set for gaging the finish of the work. The final adjustment of the gage members is accom plished by the operation of the adjusting screws 10, after which the lockers 12 are tightened up, as described.

y gage is extremely simple. The means for ad usting and locking the gage members racemes is novel, powerful and quick-acting. By the provision of the eccentric cones 12 1 am able to effect the instantaneous locking of the gage members, and when the lockers 12 are properly made and hardened, it only requires an eccentricity of from five to ten thousandths of an inch to efl'ect the rigid and positive locking of the parts. The provision of the eccentric cones 12 obviates the necessity of employing the usual screwthreadedlocking parts, thus insuring a longer life and the withstanding of rougher handling than any other gages of the class known to me.

Having thus described my invention, what 1 claim as new and desire to secure by Let ters Patent, is-

1. A gage including a horseshoe-shaped body, a plurality of alining axially movable gage members supported by the arms of said body, each member having a portion i-shaped in cross section, and a locker rotatable in a plane at right angles to the axis of each gage member, the medial portion of each locker comprising two cones having a common axis wh ch is eccentric to the axis of rotation of said locker and. movable by turning the locker into frictional engagement with the ii-shaped portion for looking the gage member in the adjusted positions.

2. In a limit gage, a body having spaced sockets, axially movable gage members each having longitudinal surfaces disposed in diverging plane in said sockets, and a cylindrical locker for each gage member, said lockers rotatable in perforations which communicate with said sockets, the medial portions of each locker comprising oppositely facing cones the axes of which are eccentric to the axes of said perforations adapted to frictionally engage the corresponding plane surfaces for locking the gage members against longitudinal movement.

3. In a gage, a horseshoe-shaped body, having transversely perforated arms, gage members arranged in pairs, and movable axially in corresponding perforations, each gage member having a portion V-shaped in cross section, rotatable locking elements, said locking elements provided with conical portions whose axes are eccentric to the axes of rotation of said elements adapted to frictionally engage said V-shaped portion for locking said gage members from longitudinal movement during the gaging operations, and means for insulating said body from the heat of the operators hands for preventing the distortion of said arms.

4. In a gage, a horseshoe-shaped body having transversely perforated arms, reciprocable gage members each havin a longitudinally arranged portion V-s aped 1n cross section and one rounded end, an adjusting screw engaging the rounded end of each gage member, and a rotatable locker for each gage member, said locker disposed in a socket arranged at right-angles to said gage member, the ends of said locker being cylindrical, and the intermediate portion of said locker comprising oppositely facing 7 ing and holding said gage member in the adjusted positions.

In testlmony whereof I afiix my signature.

LINO SCUSA. 

